base pricer for capped/floored YoY inflation coupons
This pricer can already do swaplets but to get volatility-dependent coupons you need the descendents.
Inheritance: InflationCouponPricer
Ejemplo n.º 1
0
 public void setPricer(YoYInflationCouponPricer pricer)
 {
     base.setPricer(pricer);
     if (underlying_ != null)
     {
         underlying_.setPricer(pricer);
     }
 }
Ejemplo n.º 2
0
        public static List <CashFlow> yoyInflationLeg(List <double> notionals_,
                                                      Schedule schedule_,
                                                      BusinessDayConvention paymentAdjustment_,
                                                      YoYInflationIndex index_,
                                                      List <double> gearings_,
                                                      List <double> spreads_,
                                                      DayCounter paymentDayCounter_,
                                                      List <double> caps_,
                                                      List <double> floors_,
                                                      Calendar paymentCalendar_,
                                                      List <int> fixingDays_,
                                                      Period observationLag_)
        {
            int n = schedule_.Count - 1;

            Utils.QL_REQUIRE(!notionals_.empty(), () => "no notional given");
            Utils.QL_REQUIRE(notionals_.Count <= n, () => "too many nominals (" + notionals_.Count + "), only " + n + " required");
            if (gearings_ != null)
            {
                Utils.QL_REQUIRE(gearings_.Count <= n, () => "too many gearings (" + gearings_.Count + "), only " + n + " required");
            }
            if (spreads_ != null)
            {
                Utils.QL_REQUIRE(spreads_.Count <= n, () => "too many spreads (" + spreads_.Count + "), only " + n + " required");
            }
            if (caps_ != null)
            {
                Utils.QL_REQUIRE(caps_.Count <= n, () => "too many caps (" + caps_.Count + "), only " + n + " required");
            }
            if (floors_ != null)
            {
                Utils.QL_REQUIRE(floors_.Count <= n, () => "too many floors (" + floors_.Count + "), only " + n + " required");
            }


            List <CashFlow> leg = new List <CashFlow>(n);

            Calendar calendar = paymentCalendar_;

            Date refStart, start, refEnd, end;

            for (int i = 0; i < n; ++i)
            {
                refStart = start = schedule_.date(i);
                refEnd   = end = schedule_.date(i + 1);
                Date paymentDate = calendar.adjust(end, paymentAdjustment_);
                if (i == 0 && !schedule_.isRegular(i + 1))
                {
                    BusinessDayConvention bdc = schedule_.businessDayConvention();
                    refStart = schedule_.calendar().adjust(end - schedule_.tenor(), bdc);
                }
                if (i == n - 1 && !schedule_.isRegular(i + 1))
                {
                    BusinessDayConvention bdc = schedule_.businessDayConvention();
                    refEnd = schedule_.calendar().adjust(start + schedule_.tenor(), bdc);
                }
                if (Utils.Get(gearings_, i, 1.0).IsEqual(0.0))
                {
                    // fixed coupon
                    leg.Add(new FixedRateCoupon(paymentDate, Utils.Get(notionals_, i, 1.0),
                                                Utils.effectiveFixedRate(spreads_, caps_, floors_, i),
                                                paymentDayCounter_,
                                                start, end, refStart, refEnd));
                }
                else
                {
                    // yoy inflation coupon
                    if (Utils.noOption(caps_, floors_, i))
                    {
                        // just swaplet
                        YoYInflationCoupon coup = new YoYInflationCoupon(paymentDate,
                                                                         Utils.Get(notionals_, i, 1.0),
                                                                         start, end,
                                                                         Utils.Get(fixingDays_, i, 0),
                                                                         index_,
                                                                         observationLag_,
                                                                         paymentDayCounter_,
                                                                         Utils.Get(gearings_, i, 1.0),
                                                                         Utils.Get(spreads_, i, 0.0),
                                                                         refStart, refEnd);

                        // in this case you can set a pricer
                        // straight away because it only provides computation - not data
                        YoYInflationCouponPricer pricer = new YoYInflationCouponPricer();
                        coup.setPricer(pricer);
                        leg.Add(coup);
                    }
                    else
                    {
                        // cap/floorlet
                        leg.Add(new CappedFlooredYoYInflationCoupon(
                                    paymentDate,
                                    Utils.Get(notionals_, i, 1.0),
                                    start, end,
                                    Utils.Get(fixingDays_, i, 0),
                                    index_,
                                    observationLag_,
                                    paymentDayCounter_,
                                    Utils.Get(gearings_, i, 1.0),
                                    Utils.Get(spreads_, i, 0.0),
                                    Utils.toNullable(Utils.Get(caps_, i, Double.MinValue)),
                                    Utils.toNullable(Utils.Get(floors_, i, Double.MinValue)),
                                    refStart, refEnd));
                    }
                }
            }

            return(leg);
        }
 public void setPricer(YoYInflationCouponPricer pricer)
 {
     base.setPricer(pricer);
      if (underlying_ != null ) underlying_.setPricer(pricer);
 }